Traits A - C

Absent-Minded

This Sim will sometimes forget whatever he or she was doing. This results in the current command being canceled, and the Sim skipping it in the queue. Sims will be struck with this even if Free Will is off. You'll need to babysit your Absent-Minded Sims very closely to make sure they're not skipping an incredibly important command, such as going to work.

This trait is incompatible with Perceptive.

Adventurous

Increases XP gain for completing quests while on vacation, and decreases the amount of time it takes for a Sim to go on another vacation after returning from one. If you want a lot of rewards abroad, this is the way to go, but remember that going on vacations is a little expensive. To truly take advantage of an Adventurous Sim, you'll probably need some cash in your bank account.

This trait is compatible with all others.

Ambitious

Increases the job performance rate, leading to faster promotions. However, a debuff is applied if the Sim cannot get promoted as quickly as he wants to. Good for conventional jobs, but a poor choice for self-employment.

This trait is compatible with all others.

Angler

Increases the XP rate for fishing, as well as the quality of the fish that are caught.

This trait is compatible with all others.

Animal Lover

Increases the relationship rate for interacting with all animals, but less so than the Cat Person, Dog Person, or Equestrian traits. This also allows some special social interactions with animals that are otherwise locked.

This trait is incompatible with Cat Person, Dog Person, and Equestrian.

Artistic

Increases the XP rate and quality of all creative outlets, including music, writing, and artwork, but less so than the Bookworm or Virtuoso traits. Good for self-employed Sims who are freelance writers or musicians.

This trait is incompatible with Can't Stand Art.

Athletic

Increases the XP rate of the Athletic skill and allows the Sim to work out for longer periods of time. Good for any job requiring athletics, such as the military or professional athlete career tracks.

This trait is incompatible with Couch Potato.

Bookworm

Increases the XP rate of the Writing skill, and allows better-quality books to be written in less time. Also decreases the amount of time the Sim needs to read to finish a book. Having this skill allows a Sim to read his way through any skill book fairly quickly, making it pretty useful for Generation 1 Sims.

This trait is compatible with all others.

Born Salesman (or Born Saleswoman)

Increases cash made from sales of items to the Consignment Store. This is a great trait for any Sim who is getting into Inventing, Sculpting, or Alchemy.

This trait is compatible with all others.

Brave

Allows the Sim to quickly extinguish fires or fight burglars, causing them to panic less and react faster than Sims without this trait. Fantastic for the Firefighter profession, but not very important for the police career track due to that career being autonomous.

This trait is incompatible with Coward and Loser.

Brooding

Occasionally strikes the Sim with the need to brood, which is done by a self-interaction. The brooding commands allows the Sim to regain a little in the social meter even when no one is around. If the Sim is allowed to brood uninterrupted for a few hours, he'll gain a buff.

This trait is incompatible with Excitable.

Can't Stand Art

Applies a debuff when the Sim is near artwork, especially in the art museum. Sims with this trait need to have stripped down decorated homes. However, because the trait does not apply a buff when the Sim is away from art, its use is limited.

This trait is incompatible with Artistic and Savvy Sculptor.

Cat Person

Increases the relationship gain rate between the Sim and any cat, and applies a buff when cats are nearby.

This trait is incompatible with Animal Lover, Dog Person, and Equestrian.

Charismatic

Increases the chance any social interaction will pass, and slightly increases the effect (such as relationship gain) from any such interaction. Also increases the XP gain rate of the Charisma skill. Good for careers dependent on socialization, such as the politics career track.

This trait is incompatible with Loser, but is strangely not incompatible with Shy.

Childish

Increases the relationship gain rate of toddlers and children, and unlocks special interactions with some objects. However, because the Sim is childish, his Fun meter depletes faster and takes a bit longer to fill.

This trait is incompatible with Dislikes Children.

Clumsy

Unlocks special animations showing the Sim messing up daily life, with some especially unique animations for special moments such as marriage. Depending on the animation, this may apply a weak debuff as the Sim recovers from the situation.

This trait is incompatible with Natural Born Performer.

Committment Issues

This Sim will frequently get Wants to change jobs or relationships, and possibly gain debuffs if you don't. It keeps life exciting and fresh, but can make long-term planning tough.

This trait is incompatible with Hopeless Romantic.

Computer Whiz

Reduces the chance a computer will break after use, and reduces the time needed to fix one. Applies a buff while the Sim is using the computer, and unlocks a special "Hack" interaction.

This trait is incompatible with Technophobe.

Couch Potato

Applies a buff when the Sim is watching TV or playing videogames, and increases the amount of fun derived from those activities. Applies a debuff when the Sim is doing anything athletic, and reduces the amount of time the Sim can work out before getting tired.

This trait is incompatible with Athletic, Disciplined, and Technophobe.

Coward

Causes the Sim to refuse to fight fires or burglars, and increases the duration and intensity of the automatic "Panic!" action when a disaster is happening.

This trait is incompatible with Brave, Daredevil, Natural Born Performer, and Supernatural Fan.